Oiling device



May 8, 1923- R. H. STULL OILING DEVICE Filed oct.

(1Mo: un!

Patented May 8, 1923.

i entre. star Latest 'r a r ic ROY H. erom., or SUNBURY, PENNSYLVANIA,Assieivon or THREE-,tramas fro. NORMAN SUHRIE, or SUNBURY, PENNSYLVANIA.

` orLrNG DEVICE.

Application filed October 26, 1921. Serial No. 510,423.

'Taal-7,; whom t may concern.'

Be it known that I, ROY H. STULL, a citizen of the Unit-ed States,residing at Sunbury, in t-he county-of Northumberland and be used foroiling parts of these or. otherl machines which are not subjecttointernal pressure, by connecting the device with a source of fluidpressure wherein the pressure is intermittently varied. 1

In carrying'out the inventioml provide an oil reservoir having an outletand a nor- 'F mally closed valve controlling said outlet,- with meansfor maintaining equal pressures within the reservoir and at the outletso that when the valve is open, the oil may pass by gravity from the,reservoir throughf the outlet. In association with thesepparts I providea casing which is divided into two compartments, by a movable wall,which latter, when moved from'its normal position, opens the valve whichcontrols the oil outlet. These chambers are connected by on@J or morerestricted passageways through which air, steam, or other fluid may passto equalize the' pressures on opposite sides of the movable wall. One ofthese chambers is connected to a source of variable iiuid pressure, suchas the end of a steam engine cylinder, and the fluctuating Vpressuretransmitted to this latter chamber causes the actuation ofthe valve.Thus, an increase in pressure in said latter chamber causes the movablewall to open the valve, but this increased pressure on one side of themovable wall is immediately equalized on the oppositeJ side of said wallby leakage through the restricted orifice aforesaid and the wall returnsto normal position, allowing the valve which controls the flow of oil toclose. Thus, each time steam is admitted to thevend ofthe engine lcylinder to which the casing of the oiler connect-ed, the movablewall orpart in the casing will be actuated to openuthe. valven controlling theiiow of oil, and immediatelyk thereafter this movable partwill returntov its normal vposition and theVIA valve will be permitted to close.vThe invention also in.- volves various features of construction adaptedto cause: the quick and positive action 0f theoil controlling valve, thedetailsI of which will vbe pointed out inthe vfollov'ving specification.

In the accompanying drawing,

Fig. lV is a side elevation in outline of a locomotive cylinder andsteam chest and a' part of theboiler, showing my invention appliedthereto;

Fig. 2 is a central vertical *sectionv through K5 the oiler;

Fig. 3 is a detail view on ayu-enlarged scale, showing the valve whichv`controls vthe' How of oilfrom the reservoir and some of the' associatedparts; and, v

Fig. L is a` plan view of the diaphragm partition which actuates thevalve. Referring to the' drawingga indicates one of thecylinders of alocomotive, vb the steam chest, c the boiler, and Ad represents thesteam pipe for admitting steam from the boiler to the steam chest. lUponthe top of the steam chest is shown the.V oiler of my invention,representedas a who-le by the letter E. This oiler comprises'a casing1,K having" y at its' lower end a threadedfitting l2, which screws intoa threaded opening in the to)l of the steam chest, and upon the top ofthe casing is mounted anv oil reservoir 3.' TheA fitting 2 is providedwith a threaded Opening 2a, adapted to receive one end of a `pipe twhich connects the' interior of' the fitting with the steam pipe CZ.It'is also provided with a threaded opening 2b whichreceives one end ofa. pipe 5 leading tov an opening in the topy of the oil reservoir, asVshown in Fig'. 2. lVith this arrangement, assuming the fit'- ting 2 tobe threaded into steam chest, whenKV live steam is admitted to the steamchest,

the pressure in the reservoir above the oil and in the interior of thefitting will be equalized and the pressure will be substantially thesame as that in the steam pipe and steam chest.

The casingv 1 comprises two cylindrical parts 1a and lb'which areclamped together steam-tight by a threaded clamping ring 6, and betweenthe parts is secured a diaphragm 7 which separates vthe casing 4into twocompartments e and e. The part 1b of the casing has an upward tubularpart 8 in its central portion, the top of which reaches to the undersideof the diaphragm and forms a stop against which the diaphragm normallyrests.V The part 1a of the casing has a central downwardly projectinghub 9, the lower end of which is a-sliort distance from the upper sideof the diaphragm and forms a stop to limit the upward movement of thediaphragm; The part 1fL also has an upward extension 10, which isthreaded into the bottom of the reservoir and forms a support for thelatter. The part 10 has a central bore 11, which extends downwardly fromits upper end and connects with a smaller bore 11a, which latter extendscentrally through the part 9, and in the center of the diaphragm andthecenter of the lbase of the part 1b are perforations 7 a and 8a,respectively, of smaller diameter than the bore in the part 9. A conicalvalve 12, upon a valve stem 13, is movable in the bore 11 and isnormally pressed against a seat 14 by a spring 15, which is enclosedwithiny a tubular valve stem guide 16, threaded into the part 10.Openings 16a in the sides of said guide permit the oil to run into thebore 11, around the valve. Below the valve, the Valve stem is tubular asindicated by the dotted lines 17 and constitutes a feed tube fordelivering the oil into the steam chest. The part 13a of the stem whichextends from the valve to a point between the boss 9 and the diaphragmis of larger diameter than the lower part 13b of the stem, which extendsthrough the central openings in the diaphragm and in the base of thecasing. lin

mediately under the valve, the tubular stem is provided with one or moreslots or openings 17a which permit the oil to run from the bore 11,around the valve into the tubular bore in the valve stem each time thevalve is raised lfrom its seat, the openings iii the stem being close tothe rseat as shown in Fig. 3.

It will be evident from the construction thus far described that if thevalve be raised by the upward movement of the diaphragm, oil will passby gravity from the reservoir to the steamchest, the pressures in thereservoir and at the outlet end of the tubular valve stem being equal.The interior of the fitting 2 communicates with the interior of' thechamber e through restricted orifices 18 in the base of said chamber andthrough openings 19 of' larger diameter in the wall of the tubularprojection 8. Through the restricted orifices live steam at reducedpressure may enter the chamber ey at all times. T he diaphragm 7 has oneor more restricted orifices 7 b, which are always open to permit thepressures in the chambers e .andef to equalize more or less gradually,and it has ports 7 which are normally closed against the end of the part8, but which open, when the diaphragm is forced upwardly, and allowquickequilization of the pressures in said chambers. The bottom of thechamber e is provided with anopening 20 of somewhat larger crosssectional area than the combiiied cross sectionalareas of thepassageways 18, and a pipe 21 connects this opening with the interior`ofthe cylinder a at one end thereof.

In operation, when live steam is admitted to the steam chest through thepipey d, the pressures in the fitting 2, inwhich .the outlet of the oilfeed tube is located, and in the oilreservoir are alike. VPrior to theadmission of steam to thevcylinder, steam from the fitting 2 will fiow.through the'restricted orifices 18 into the chamber e and through f thepipe 21 to the end of the cylinder, and i will `create a pressure in thechamber this e lower' than the live' steam pressure. Steam will'alsopass from the chamber the vrestricted orifices 7b into the chambere and thus the'pressuresin the chambers e and e will be equalized. vThensteam is adc through initted through the engine. valve to the' end ofthe cylinder to which the pipe 21 is conjected to the full steampressure in the cylinder, and as the pressure in the compartment e isthen low, the pressure in the couiilected, the chamber e will beinstantly subpartment e will force the diaphragm 7 up.-

wa'rdly and this will cause the valve 12 to lift, thereby allowing oilto enter ports 17,a

in the feed tube'and this oil will pass down the tube to the steamchest. When the diaphragm lifts from the part 8, the ports 7c arethereby opened andthe steam from the compartment e', passing throughthese ports as well as throughthe orifices 7b, quickly causes thepressure in the chamber e to equalithat in the chamber e and when thisoc'V seats v curs, the diaphragm immediately against the part 8 and thevalve 12 closes,

cutting off the fiow of oil. When the steamf exhausts from the end ofthe cylinder to which the pipe 21 is connected, the pressurel in thechamber e drops. the pressure in the chamber being relieved throughv thepipe 21,;

and the pressure in the chamber e also drops by reason of the escape ofsteam through they ports y7b. The leakageof live steam through the ports18 into the compartment e main.

tains a certain amount 0f pressure in this;

is admitted t0 the engine cylinder, the valve.

controlling the outlet of oil from the reservoir will be lifted,allowing a small portion of oil to pass out, to oil the engine valvesland cylinder. If the locomotive is drifting with steam cut off, the backpressure in the engine cylinder will cause the diaphragm to lift andopen the oil valve, and since there is no steam pressure at this time inthe steam chest, nor in the oil reservoir, the oil will liow by gravitythrough the feed tube at each operation of the oil controlling valve.

`While the invention is shown connected to the cylinder of a steamlocomotive, it will be evident that the device can be used for oilingthe external as well as internal parts of various n'iachiiies. iii whichthere is developed a fluctuating fluid pressure for actuating thediaphragm which operates the valve controlling the liow of oil. Thediaphragm constitutes a movable wall between the chambers e and e andthis wall. or the movable part of it, may be variously constrncted.

What I claim is:

l. In an oiling device, a reservoir having an outlet, a normally closedvalve controlling said outlet, a casing, a wall dividing said casinginto two compartments, said compartments being connected by a restrictedorifice and by a normally closed port, and said wall being movable inresponse to relative changes in pressure 1n said compartments to opensaid valve and port, and means for causing fluctuations in pressure inone of said compartments.

2. In an oiling device, an oil reservoir having an outlet,. a normallyclosed valve controllingsaid outlet, means for maintaining equal fluidpressures in the reservoir and at the outlet, a casing, a movable wallin the casing adapted to actuate said valve, said wall dividing thecasing into two compertinents and said compartments being` connected bya restricted passageway, and means for admitting fluid under fluctuatingpressures to one of said compartments.

3. In an oiling device, :in oil reservoir having an outlet, a normallyclosed valve controlling said outlet. means for maintaining equal fluidpressures in the reservoir and at the outlet, a casing, a movable wallin the casing adapted to actuate said valve,

saidwall= dividing the casing into two compartments; and saidcompartments being connected by a restricted passageway, means formaintaining relatively low pressures in.said.compartmentspand meansforadmitting fluid under relatively high pressure to one of saidcompartments intermittently. f

a. Ine anl oiling device, an oil reservoir,

a casing below said reservoir, an outlet chamber, a duct leading fromsaid reservoir to' said chamber, a valve normally closing said duct, amovable wall in said casing adapted to actuate said valve, `said walldividing the casing into two compartments,

said compartments being connected by a restricted passageway and one ofsaid compartments being connected to said outlet chamber by a restrictedpassageway, means for admitting fluid under constant pressure to saidreservoir and outlet chamber, and

means for admitting fluid under fluctuating pressures to said lastmentioned compartment.

5. In an oiling device, an oil reservoir, acasing below said reservoir,a diaphragm dividing said casing into two compartments, saidcompartments being connected by a restricted passageway, a feed tubeextending from said reservoir through said casing and diaphragm andhaving a shoulder adjacent the diaphragm, a normally closed valvecontrolling the flow of oil through said feed tube, lconnections formaintaining constant fluid pressure in the y'reservoir and at the outletof the feed tube, and connections for admitting fluid under variablepressures to one of said compartments to cause the diaphragm to lift thefeed tube and valve.

6. In an oiling device, an oil reservoir, a casing below said reservoir,a diaphragm dividing said casing into two compartments, saidcompartments being connected by a restricted passageway, a feed tubeextending from said reservoir through said casing and diaphragm` andhaving a shoulder adjacent the diaphragm, a normally closed valvecontrolling theA flow of oil through said feed tube, connections formaintaining a relatively high constant fluid pressure in the reservoirand at the outlet of the feed tube,

and a relativelyvlower pressure in one of said compartments, and meansfor admity a casing below said reservoir, a diaphragm dividing saidcasing into two compartments said diaphragm having a normally closedport and said compartments being connected by an open restrictedpassageway, a feed tube extending from said reservoir through saidcasing and diaphragm and adapted to be moved by the diaphragm When thelatter phragm to litfthe feed tube and Valve and 10 is moved from normalposition, a normally open said port. closed valve controlling the flowof oil In testimony whereof I ax my signature through the feed tube andmovable thereby, in presence of two Witnesses. e connections formaintaining constant fluid pressure in the reservoir and at the outlet iROY H STULL A of the feed tube, and connections for ad- Vitnesses: emitting fluid under Variable pressures to JOHN W. BASSLER,

one of said compartments to cause the clia- C. WN. CLEMENT,

